Using the latest Itch.io version on Windows 11.
"The video file 'FH-17.mp4' appears to be invalid since it is too small. Skipping!" is the error I got.
Video itself is full, but because it's old one, it is in lot lower resolution.. But if that text actually refers to ID, it is also valid ID.

Other program I use, does find it.. And it has found some of the others too that JAV-IT could not for some reason